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Roblox

Principal Machine Learning Engineer, Content Safety

Roblox · San Mateo, CA, United States

Posted about 2 months ago

or apply directly on Roblox's site. We never take the application ourselves.

Is this posting real?

This role has been open
66 days
Roblox's roles stay open a median of 66 days
Reposted
No
Salary listed
No
0% of Roblox's roles list one
Ghost-job risk at Roblox
high
200 stale, 9 reposted of 234 open
Hiring momentum
313 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-08

Measured from postings appearing on and disappearing from Roblox's own greenhouse board since 2026-08-03. Full hiring picture for Roblox.

About this role

As a Principal Machine Learning Engineer for Content Safety at Roblox, you will define and lead the technical vision and strategy for machine learning solutions aimed at proactive content moderation. Your role involves collaborating with various stakeholders to prioritize the ML roadmap, overseeing the adoption of innovative techniques, and engaging in end-to-end product development, including backend and integration work. You will ensure the safety of the platform while balancing user freedom and civility.

Our read on this posting2.4out of 5
benefits
1/5
freshness
1/5
career value
5/5
role clarity
5/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Roblox as an employer.

What you need

  • 8+ years of experience designing, developing, and operating large-scale, high-impact machine learning systems in a production environment
  • Proven track record of setting the long-term technical direction for an entire ML domain
  • Deep expertise in advanced ML architectures and techniques, including Computer Vision (CV) and/or Vision-Language Models (VLMs)
  • Expertise in architecting scalable, real-time ML inference services and robust data pipelines
  • Demonstrated success in leading and resolving high-stakes, cross-functional conflicts and technical disagreements
  • Exceptional product sense and strategic planning ability

Nice to have

  • Comfortable with ambiguity and able to provide structure in undefined problem spaces
  • Passionate about developing the next generation of technical leaders, managers, and engineers
  • Highly effective at communicating complex technical concepts to both engineering teams and non-technical executive leadership
  • Dedicated to building ML systems that are fair, transparent, and operate with responsibility toward user safety

What you get

  • Equity compensation
  • Benefits as described in the posting

Worth weighing

  • No specific technologies or tools mentioned beyond modern AI coding tools
  • Salary range provided but dependent on various factors
  • Onsite work required three days a week with optional presence on other days
  • US work authorization may be a limitation for some candidates

Summarised from Roblox's posting. Read the full original.

Listed by Roblox on their greenhouse job board, last confirmed open on 2026-10-08. PitchMeAI is not the employer.

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